Murine Models for Staphylococcal Infection

Area of Science:

• Microbiology
• Immunology
• Infectious Diseases

Background:

• Staphylococcus aureus is a prevalent Gram-positive bacterium causing diverse human infections.
• Antibiotic resistance and tissue damage complicate S. aureus infection treatment.
• Abscess formation, involving neutrophils and macrophages, is a hallmark of S. aureus infections.

Purpose of the Study:

• To describe in vivo mouse models for studying Staphylococcus aureus infections.
• To investigate organ-specific immune responses and pathogen adaptations.
• To facilitate the development of novel therapeutics against S. aureus.

Main Methods:

• Utilizing fluorescent transgenic mice and bioluminescent bacteria for in vivo imaging.
• Employing established murine models for subcutaneous infection and osteomyelitis.
• Implementing tape stripping for skin infection models and intravenous inoculation.
• Describing protocols for sample collection and bacterial inoculum preparation.

Main Results:

• Mouse models allow detailed observation of host-pathogen dynamics in various organs.
• In vivo imaging provides insights into immune cell behavior and bacterial spread.
• These models enable assessment of bacterial load and inflammatory mediator production.

Conclusions:

• In vivo mouse models are essential for understanding S. aureus pathogenesis and host immunity.
• Advanced imaging techniques enhance the study of infection dynamics.
• Developing effective therapeutics relies on a comprehensive understanding of host-pathogen interactions within these models.